EP0673314A1 - A method and arrangement for mutually bonding moving material webs, and absorbent articles that include material layers mutually bonded in accordance with the method - Google Patents
A method and arrangement for mutually bonding moving material webs, and absorbent articles that include material layers mutually bonded in accordance with the methodInfo
- Publication number
- EP0673314A1 EP0673314A1 EP93923099A EP93923099A EP0673314A1 EP 0673314 A1 EP0673314 A1 EP 0673314A1 EP 93923099 A EP93923099 A EP 93923099A EP 93923099 A EP93923099 A EP 93923099A EP 0673314 A1 EP0673314 A1 EP 0673314A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- liquid
- speed
- bonding
- puckered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
- B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
- B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
- B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51165—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of films and nonwovens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51178—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of nonwoven webs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
- A61F2013/51355—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability for improving fluid flow
- A61F2013/51361—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability for improving fluid flow with pleats or folds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/028—Treatment by energy or chemical effects using vibration, e.g. sonic or ultrasonic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
- Y10T156/1702—For plural parts or plural areas of single part
- Y10T156/1712—Indefinite or running length work
- Y10T156/1737—Discontinuous, spaced area, and/or patterned pressing
Definitions
- the present invention relates to a method and to an arrangement for mutually bonding at least two moving continuous webs of material.
- the invention also relates to a disposable absorbent article, such as a diaper, a sanitary napkin, an incontinence guard or the like which includes an absorbent pad, a liquid-impermeable layer on one side of the pad and a liquid-permeable, liquid- receiving outer layer on the other side of the pad, said outer layer including at least two mutually bonded liquid-permeable layers.
- Methods for mutually bonding two or more moving material webs to form an essentially smooth laminate are known to the art.
- the materi- al webs are thermobonded between two heated, rotating rolls.
- a binding agent is applied to at least one of the webs, whereafter the webs are combined and bonded to one another, for instance by passing the webs between two rolls.
- Another known method involves laminating two material webs with the aid of ultrasonic welding techniques.
- a prerequisite for both thermobonding and ultrasonic welding is that at least one of the webs includes weldable material.
- the webs are comprised, for instance, of non- woven fabric comprising fibres of, for instance, poly ⁇ ethylene, polypropylene, polyester or the like.
- the European Patent Application EP-A-0 409 315 teaches a method of producing a laminate which includes at least one corrugated laminate layer. Two laminate layers, of which at least one has corrugations in the movement direction of the layer, are passed through the nip of two rolls of which at least one has a plurality of peripheral grooves in which the corrugations are intend ⁇ ed to fit while the layers are mutually bonded in re ⁇ gions located between the corrugations, i.e. in regions corresponding to the spaces between the grooves in the roll or rolls.
- the wrinkles are not permanently set, there is a serious risk that the wrinkles will be smoothed-out when the web is subjected to forces in its longitudinal direction. Furthermore, if the microcreped material webs are rolled-up on a rack after the micro ⁇ creping process and before being used in the diaper manufacturing process, the wrinkles may be influenced unfavourably, e.g. may be smoothed-out and disappear.
- the present invention relates to a method which will enable moving webs of material to be mutually bonded quickly and simply, in a manner such that at least one of the webs will be permanently puckered while at least one of said webs will remain essentially smooth.
- a method of the kind defined in the introduction which further comprises the steps of advancing a first web of material from a first depot or store at a first speed, advancing a second web of material from a second depot or store at a second speed which is lower than the first speed, bringing the first web and the second web together and mutually bonding said webs to form a laminate with.the aid of a web bonding arrangement while maintaining the speed difference between the first web and the second web, wherein said first web is puckered upon entry into the web bonding arrangement as a result of the higher speed of said first web in relation to the speed of the second web at the web bonding moment, while the second web remains essentially smooth, and advancing the lami ⁇ nate from the web bonding arrangement
- Another object of the invention is to provide an absor ⁇ bent article of the kind defined in the introduction which will allow liquid to quickly pass therethrough and which has a low re-wetting tendency. This is achieved by the fact that at least a first of said liquid-permeable layers is puckered or wrinkled and that a second of said liquid-permeable layers is essentially smooth.
- a liquid-receiving outer layer according to the inven- tion is able to receive a large volume of liquid, be ⁇ cause the first liquid-permeable layer is puckered.
- the first layer thus exhibits a large number of troughs and peaks which considerably increase the volume of the liquid-receiving outer layer in comparison with a per- fectly smooth liquid-receiving outer layer.
- Figure 2 is a longitudinal sectional view of part of a laminate constructed in accordance with the method illustrated in Figure 1;
- Figure 3 is a view from above of an incontinence guard according to one embodiment of an inventive absorbent article;
- Figure 4 is a cross-sectional view of the incontinence guard illustrated in Figure 3.
- a first web of material 1 is advanced from a first depot or store (not shown) and in between two rotating rolls 2 and 3 whose peripheral speeds are equal to a first speed V .
- the first web 1 is thus advanced at said first speed V to a web-bonding means 4, via guide rollers 9a, 9b.
- a second web of mate ⁇ rial 5 is advanced from a second depot or store (not shown) and in between two rotating rolls 6 and 7 whose peripheral speed is equal to a second speed V , and the second web 5 is then further advanced to the web-bonding means 4 via a guide roller 9c at said second speed V .
- the first speed V is higher than the second speed V and the speed of the first web 1 will thus be higher than the speed of the second web 5 as the two webs move through the web-bonding means 4.
- the web-bonding means 4 includes an ultrasonic horn 8 and a rotating counter- pressure roll 9 whose peripheral speed corresponds to the first speed V .
- the horn 8 and the roll 9 define therebetween a nip 11 through which the two webs 1, 5 pass.
- the second web 5 will pass between the horn 8 and the first web 1 and the first web 1 will lie against the rotating counterpressure roll 9 as the two webs 1, 5 are mutually bonded to form a laminate 12.
- the ultrasonic horn 8 vibrates at a suitable frequency, for instance a frequency of 20 kHz or thereabove, and lies under pres ⁇ sure against the roll 9.
- a suitable frequency for instance a frequency of 20 kHz or thereabove
- Disposed on the roll 9 are a number of elements which stand out from the outer sur ⁇ face 10 of the roll, these elements being too small to be seen in the schematic view of Figure 1.
- these elements are disposed in any suitable manner known to the skilled person, for instance in a discontinuous pattern of discrete spikes, elongated ribbons arranged essentially in the axial direction of the counterpres- sure roll, or like arrangements.
- the pattern may be regular or irregular and it may cover the whole of the outer surface 10 of the counterpressure roll or may solely cover parts thereof.
- the outwardly projecting elements function as local dollies or anvils in the formation of welded laminate parts as the first and the second webs 1, 5 pass through the nip 11 between the ultrasonic horn 8 and the counterpressure roll 9.
- the mutually welded first and second webs 1, 5 thus leave the web bonding arrangement 4 as a laminate 12 which then passes between two rotating rolls 13, 14 whose peripheral speeds are equal to the second speed V .
- the first web 1 may have the same width as the second web 5 or may be narrower when desiring a laminate 12 that has folds solely over a part of its width.
- the first web 1 may be either centred in relation to the imagi- nary, longitudinally extending symmetry axis of the web 5 or may be offset laterally in either direction.
- any one of the webs forming the laminate 12 may, in turn, consist of a multi-layer laminate and thus need not necessarily be comprised of solely one single layer.
- material webs which can be bonded together in accordance with the present invention include non- woven fabrics, for instance spun-bonded fabric and thermobonded fabric.
- Other weldable materials are also conceivable, such as thermoplastic films, which may also be perforated. It is also conceivable for only one of the webs to comprise weldable material.
- the other web or webs may, in this case, be comprised of tissue material, for instance.
- a calendar may be used instead of the web-bonding means illustrated in Figure 1.
- a calendar includes two counter-rotating, heated rolls or cylinders between which the webs are bonded together as they pass therebetween. One roll rotates at a peripheral speed corresponding to the first, higher speed V and the second roll rotates at a peripheral speed corresponding to the second, lower speed V .
- the mutually bonded webs, i.e. the laminate, exiting from the rolls travels at the lower speed V .
- the first web will be puckered or folded in parts which lie upstream of the web-bonding site in the roll nip as a result of the abrupt change in speed in the web-bonding moment upon passage between the rolls.
- the second web remains smooth, similar to the second web of the Figure 1 embodiment. Similar to the counterpressure roll 9, one of the calendar rolls has a discontinuously patterned surface.
- a laminate produced in accordance with the inventive method is particularly suited for use as a liquid-re- ceiving outer layer of a disposable absorbent article, such as a diaper, incontinence guard and the like.
- An incontinence guard 17 will now be described by way of an example of an inventive absorbent article, with refer ⁇ ence to Figures 3 and 4.
- the illustrated incontinence guard 17 includes an absor ⁇ bent pad 18, a liquid-impermeable outer layer 19 on one side of the pad 18, and a liquid-receiving outer layer 20 on the other side of said pad.
- the liquid-receiving outer layer 20 is intended to face towards the wearer.
- the liquid-receiving outer layer 20 includes a puckered, first liquid-permeable layer or sheet 21, and an essentially smooth, second liquid-permeable layer 22.
- the smooth, second liquid- permeable layer 22 is placed nearest the absorbent pad 18, while the puckered, first liquid-permeable layer 21 is placed on that side of the smooth, second layer 22 which is distal from the pad 18.
- the puckered, first liquid-permeable layer 21 presents a large number of folds or wrinkles which extend essentially in the longitudinal direction of the incontinence guard 17.
- the puckered, first layer 21 is bonded to the smooth, second layer 22 at a number of bonding regions 16 in the form of a large number of discrete binding points, for in ⁇ stance in the form of punctiform welds.
- the first liq ⁇ uid-permeable layer 21 and the second liquid-permeable layer 22 both include weldable material. These materials may be comprised, for instance, of non-woven fabric of the thermobond and/or spun-bond type.
- the two liquid- permeable layers 21, 22 may be comprised of different types of non-woven fabric or may be comprised mutually of the same kind of non-woven fabric, provided that the layers can be bonded together by thermobonds or welds, for instance by ultrasonic methods.
- the puckered, first liquid-permeable layer 21 may be com ⁇ prised of a spun-bond non-woven fabric having a surface
- the smooth, second liquid- permeable layer 22 may be comprised of a spun-bond non-
- said second layer may be comprised of a carded thermobond non-woven fabric having a surface weight of 17 g/m2 __, . . ,
- spun-bond non-woven fabric as the puckered, first liquid-permeable outer layer, since spun-bond non-woven material can be handled in low surface weights and is felt to be soft against the wearer's skin in use.
- the non-woven fabrics are essentially inelastic, which is an advantage since this will counteract smoothing of the folds or wrinkles
- the non-woven materi- als may include for instance polypropylene fibres, polyester fibres, viscose fibres or mixtures thereof.
- Bicomponent fibres are also conceivable.
- the specific liquid-receiving volume of said layer is much greater than the liquid-receiving volume of a conven ⁇ tional liquid-permeable layer having an essentially smooth liquid-receiving surface and therefore a rela- tively low liquid-receiving volume.
- This enables liquid to be transported very quickly through the liquid-re ⁇ ceiving layer into the absorbent pad.
- the liquid-receiv ⁇ ing outer layer 20 also has a very low re-wetting ten ⁇ dency, i.e. liquid is prevented from passing from the absorbent pad 18 back up through the outer layer 20 and thus from coming into contact with the wearer's skin.
- the absorbent material contained by the absorbent pad 18 may be cellulose fluff.
- the absorbent material may also include liquid-absorbing hydrogels, so-called superab- sorbents, by which is meant polymers that are able to absorb liquids in quantities many times their own weight. These hydrogels may be mixed more or less homo- geneously in the cellulose fluff or may be placed in layers within the absorbent pad 18.
- the con ⁇ struction of the absorbent pad 18 has no critical sig ⁇ nificance to the invention, provided that the pad is able to fulfil the requirement of quickly receiving and spreading the liquid that penetrates through the liquid- receiving outer layer 20.
- the liquid-impermeable outer layer 19 functions as a barrier layer in preventing leakage of the liquid ab ⁇ sorbed by the absorbent pad 18.
- This liquid-impermeable outer layer 19 may, for instance, be comprised of poly ⁇ ethylene film or like material.
- the puckered, first liquid-permeable layer 21 of the embodiment illustrated in Figure 3 takes-up an area which is smaller than the total area of the liquid- receiving outer layer 20.
- the remaining area of the liquid-receiving surface layer 20 is comprised solely of the smooth, second liquid-permeable layer 22.
- the puck ⁇ ered, first liquid-permeable layer 21 takes-up roughly a third of the surface area of the liquid-receiving outer layer 20 and is placed in the crotch part 23 of the incontinence guard 17, said crotch part being the nar- rower part of the incontinence guard 17 and is intended to be placed between the wearer's thighs in use.
- a respective end-part 24, 25 which is intended to face forwardly and rearwardly of the wearer. Since the incontinence guard 17 illustrated in Figure 3 is fully symmetrical with regard to the configuration of the crotch part 23 and the end-parts 24, 25, there is no actual front and back to the incontinence guard 17. This need not always be the case, however. On the contrary, a diaper, sanitary napkin or an incontinence guard may be provided with a pronounced front and back end so as to achieve the best possible body fit. In this case, the crotch part may be displaced forwardly or rearwardly in the article, ac- cording to the intended use of the article and its con iguration.
- the puckered, first liquid-permeable layer 21 will define a liquid-receiving zone 26 in the crotch part 23.
- this liquid-receiving zone 26 may also be located outside the crotch part, for instance in the front part of diapers that are intended for male users, who normal ⁇ ly deliver body liquid to a forward part of the diaper located in front of the crotch part.
- the puckered, first liquid-permeable layer will, of course, be located in these forward regions of the article.
- the whole of the liquid-receiving outer layer shall be capable of allowing liquid tn pass quickly therethrough and in cases such as these, the puckered, first liquid-permeable layer will cover the whole of the smooth, second liquid-permeable layer.
- two or more puckered layers can be provided which together cover a surface area that is smaller than the whole of the area of the liquid-receiving surface layer but with each layer covering individual parts over more or less separated portions of the incontinence guard.
- a plurality of transverse strips may be disposed across the incontinence guard.
- the folds 15 illustrated in Figure 3 are oriented essen ⁇ tially in the longitudinal direction of the incontinence guard 17, although it will be understood that the puck ⁇ ered layer 21 can be applied so that the wrinkles or folds 15 are oriented essentially transversely to the longitudinal direction of the incontinence guard 17. Since the peaks of these folds will, to some extent, prevent liquid and fluid excrement from running trans ⁇ versely to the folds, the direction in which the folds 15 are oriented in different parts of the incontinence guard 17 will also have some significance.
- the folds 15 in the crotch part 17 may extend in the longitudinal direction of the incontinence guard 17, since liquid that meets the liquid-receiving outer layer 20 close to the edge of the incontinence guard will find difficulty in running over the edge of the incontinence guard even if, against expectations, the liquid is not transported quickly through the outer layer 20 and into the absorbent pad 18.
- the folds or wrinkles in the end- parts 24, 25 may be oriented in the transverse direction of the incontinence guard, at least in the proximity of the end-edges.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9202993 | 1992-10-12 | ||
SE9202993A SE501785C2 (en) | 1992-10-12 | 1992-10-12 | Method and apparatus for bonding continuous material webs and absorbent articles comprising layers of material bonded according to the method |
PCT/SE1993/000827 WO1994008789A1 (en) | 1992-10-12 | 1993-10-11 | A method and arrangement for mutually bonding moving material webs, and absorbent articles that include material layers mutually bonded in accordance with the method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0673314A1 true EP0673314A1 (en) | 1995-09-27 |
EP0673314B1 EP0673314B1 (en) | 1998-09-16 |
Family
ID=20387457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93923099A Expired - Lifetime EP0673314B1 (en) | 1992-10-12 | 1993-10-11 | A method and arrangement for mutually bonding moving material webs, and absorbent articles that include material layers mutually bonded in accordance with the method |
Country Status (19)
Country | Link |
---|---|
US (1) | US5609702A (en) |
EP (1) | EP0673314B1 (en) |
JP (1) | JPH08502220A (en) |
AT (1) | ATE171109T1 (en) |
AU (1) | AU675674B2 (en) |
CA (1) | CA2146876A1 (en) |
CZ (1) | CZ90795A3 (en) |
DE (1) | DE69321138T2 (en) |
DK (1) | DK0673314T3 (en) |
ES (1) | ES2125352T3 (en) |
GB (1) | GB2271315B (en) |
HU (1) | HU218625B (en) |
NZ (1) | NZ256933A (en) |
PL (1) | PL175001B1 (en) |
SE (1) | SE501785C2 (en) |
SK (1) | SK281574B6 (en) |
TN (1) | TNSN93110A1 (en) |
WO (1) | WO1994008789A1 (en) |
ZA (1) | ZA937384B (en) |
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US6588080B1 (en) | 1999-04-30 | 2003-07-08 | Kimberly-Clark Worldwide, Inc. | Controlled loft and density nonwoven webs and method for producing |
US6635136B2 (en) | 2000-03-30 | 2003-10-21 | Kimberly-Clark Worldwide, Inc. | Method for producing materials having z-direction fibers and folds |
US6867156B1 (en) | 1999-04-30 | 2005-03-15 | Kimberly-Clark Worldwide, Inc. | Materials having z-direction fibers and folds and method for producing same |
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US5704101A (en) * | 1995-06-05 | 1998-01-06 | Kimberly-Clark Worldwide, Inc. | Creped and/or apertured webs and process for producing the same |
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US5735840A (en) * | 1996-09-20 | 1998-04-07 | The Procter & Gamble Company | Disposable diaper with integral backsheet landing zone |
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US5930139A (en) * | 1996-11-13 | 1999-07-27 | Kimberly-Clark Worldwide, Inc. | Process and apparatus for registration control of material printed at machine product length |
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US6638605B1 (en) | 1999-11-16 | 2003-10-28 | Allegiance Corporation | Intermittently bonded nonwoven disposable surgical laminates |
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US6555731B2 (en) | 2000-12-29 | 2003-04-29 | Kimberly-Clark Worldwide, Inc. | Pad integrity improvement by replacing the constructive adhesive with ultrasonic compressions |
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US6613171B2 (en) | 2001-12-18 | 2003-09-02 | Kimberly-Clark Worldwide, Inc. | Rotary ultrasonic bonder or processor capable of fixed gap operation |
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US20050281977A1 (en) * | 2004-01-23 | 2005-12-22 | Mashburn Larry E | Method of carpet construction |
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US7651653B2 (en) * | 2004-12-22 | 2010-01-26 | Kimberly-Clark Worldwide, Inc. | Machine and cross-machine direction elastic materials and methods of making same |
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US7704341B2 (en) * | 2005-12-15 | 2010-04-27 | Kimberly-Clark Worldwide, Inc. | Method and apparatus for mechanically bonding material webs |
CA2667595C (en) * | 2006-11-27 | 2013-08-20 | Uni-Charm Corporation | Absorbent article and composite sheet |
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FR3019493B1 (en) * | 2014-04-08 | 2017-11-10 | Aplix Sa | PROCESS FOR IMPORTING DEVELOPMENT AGRIPPTING LAMINATE AND LAMINATE OBTAINED BY THE PROCESS |
US9775749B2 (en) * | 2015-02-04 | 2017-10-03 | The Procter & Gamble Company | Apparatuses and methods for transferring and bonding substrates |
ITUB20153482A1 (en) * | 2015-09-08 | 2015-12-08 | Fameccanica Data Spa | THREE-DIMENSIONAL COMPOSITE TAPE, PROCEDURE AND APPARATUS FOR ITS PRODUCTION |
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-
1992
- 1992-10-12 SE SE9202993A patent/SE501785C2/en not_active IP Right Cessation
-
1993
- 1993-10-05 ZA ZA937384A patent/ZA937384B/en unknown
- 1993-10-06 GB GB9320572A patent/GB2271315B/en not_active Expired - Lifetime
- 1993-10-11 SK SK473-95A patent/SK281574B6/en unknown
- 1993-10-11 DK DK93923099T patent/DK0673314T3/en active
- 1993-10-11 EP EP93923099A patent/EP0673314B1/en not_active Expired - Lifetime
- 1993-10-11 CZ CZ95907A patent/CZ90795A3/en unknown
- 1993-10-11 CA CA002146876A patent/CA2146876A1/en not_active Abandoned
- 1993-10-11 US US08/411,809 patent/US5609702A/en not_active Expired - Lifetime
- 1993-10-11 AT AT93923099T patent/ATE171109T1/en not_active IP Right Cessation
- 1993-10-11 NZ NZ256933A patent/NZ256933A/en unknown
- 1993-10-11 TN TNTNSN93110A patent/TNSN93110A1/en unknown
- 1993-10-11 JP JP6509905A patent/JPH08502220A/en not_active Ceased
- 1993-10-11 DE DE69321138T patent/DE69321138T2/en not_active Expired - Fee Related
- 1993-10-11 ES ES93923099T patent/ES2125352T3/en not_active Expired - Lifetime
- 1993-10-11 HU HU9501044A patent/HU218625B/en not_active IP Right Cessation
- 1993-10-11 AU AU52896/93A patent/AU675674B2/en not_active Ceased
- 1993-10-11 WO PCT/SE1993/000827 patent/WO1994008789A1/en not_active Application Discontinuation
- 1993-10-11 PL PL93308305A patent/PL175001B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
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See references of WO9408789A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6588080B1 (en) | 1999-04-30 | 2003-07-08 | Kimberly-Clark Worldwide, Inc. | Controlled loft and density nonwoven webs and method for producing |
US6867156B1 (en) | 1999-04-30 | 2005-03-15 | Kimberly-Clark Worldwide, Inc. | Materials having z-direction fibers and folds and method for producing same |
US6998164B2 (en) | 1999-04-30 | 2006-02-14 | Kimberly-Clark Worldwide, Inc. | Controlled loft and density nonwoven webs and method for producing same |
US6635136B2 (en) | 2000-03-30 | 2003-10-21 | Kimberly-Clark Worldwide, Inc. | Method for producing materials having z-direction fibers and folds |
Also Published As
Publication number | Publication date |
---|---|
PL308305A1 (en) | 1995-07-24 |
GB9320572D0 (en) | 1993-11-24 |
GB2271315B (en) | 1997-01-08 |
SE9202993D0 (en) | 1992-10-12 |
NZ256933A (en) | 1996-08-27 |
ATE171109T1 (en) | 1998-10-15 |
CA2146876A1 (en) | 1994-04-28 |
HU9501044D0 (en) | 1995-06-28 |
DE69321138D1 (en) | 1998-10-22 |
SE501785C2 (en) | 1995-05-15 |
CZ90795A3 (en) | 1995-12-13 |
AU675674B2 (en) | 1997-02-13 |
ES2125352T3 (en) | 1999-03-01 |
ZA937384B (en) | 1994-04-26 |
WO1994008789A1 (en) | 1994-04-28 |
AU5289693A (en) | 1994-05-09 |
PL175001B1 (en) | 1998-10-30 |
DE69321138T2 (en) | 1999-05-12 |
TNSN93110A1 (en) | 1994-03-17 |
HUT75889A (en) | 1997-05-28 |
SE9202993L (en) | 1994-04-13 |
HU218625B (en) | 2000-10-28 |
SK47395A3 (en) | 1995-12-06 |
JPH08502220A (en) | 1996-03-12 |
DK0673314T3 (en) | 1999-06-14 |
GB2271315A (en) | 1994-04-13 |
US5609702A (en) | 1997-03-11 |
EP0673314B1 (en) | 1998-09-16 |
SK281574B6 (en) | 2001-05-10 |
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